A chiropractic adjustment, also called chiropractic manipulation, is a highly controlled procedure in which pressure is applied in a precise direction to a spinal joint that is not moving correctly. Although many first-time chiropractic patients are surprised by popping sounds during an adjustment, the noise is simply the joints releasing very small pockets of air. The force applied is gentle and controlled in such a way that it should not cause any discomfort to the patient at all. The purpose of chiropractic manipulation is to correct the alignment of the spine and minimize its interference with the nervous system. Doing so correctly will reduce pain and improve spinal function. Adjustments are non-invasive, drug-free, and completely safe when performed by a licensed chiropractor.